NEXUS-6045: Improving reporting of conflicts

To explain the sources of static resources.
NEXUS-6045: Making a log DEBUG

As it was originally intended
NEXUS-6045: Faking the context root

As restlet1x is not at webapp root anymore, this change
makes the method that returns root reference actuall
return that, instead of restlet1x app root, that is now
/service/local (before was at root)